Top-up your Toolkit with 75 more SCRU-XLs, plus 1x bonus MINI-TOOL!
See how easy it is to join cardboard together with Makedo:
Punch a hole through the material using the MINI-TOOL,
Insert the SCRU into the socket on the MINI-TOOL,
and then with a few quick turns the cardboard will be securely joined.
75 x SCRU XL 
Connects up to six layers of corrugated cardboard.
1 x BONUS MINI-TOOL
Connect cardboard as simply as righty tighty, lefty loosey.
For parallel and cooperative making.